REPORTS FROM THE

BIRDLIFE 

What smallest bird holds a large world record? He is only 25 grams and holds still a world record. The longest migration creates the NORTHERN WHEATEAR (Oenanthe oenanthe) among birds and performs powerful flight performance. Every year this bird flies more than 30.000 kilometers from Alaska to Africa, report scientists from the institute of Avian Research in Wilhelmshaven in the UK “Biology Letter”. Northern Wheatears fly alone, not in groups. They can fly for hours at a speed of 50 km/hour in a night, depending on the wind put back some 300 kilometers. Alaskan NORTHERN WHEATEARS breeds fly to winter over Northern Russia, Asia, the Caspian Sea to the Arabian Peninsula. Some of the NORTHERN WHEATEARS fly from Eastern Canada across the Atlantic over Greenland and the British Isles to Western Africa.   ++++++++++++++++++++++++++++++++++++ .
© by Wekrue WebDesign 2018
Parrots use fluorescent feathers to attract sexual partners Avian Researchers have demonstratet by budgerigars that parrots also use their fluorescence to attract attention, from sexual mates. Fluorescence appears to glow because it absorbs ultra-violet (UV) light, which humans cannot see, and re-emits it as human-visible yellow light. They demonstrated the fact in an experiment in which budgies had their heads daubed with sunblock cream, which absorbs UV-light. A control group was treated with pure vaseline. The research ruled out other possible uses of the fluorescent colours such as species identification or social grouping. According to the scientists report is the colour vision of birds much better than human vision. To humans, all yellow feathers might look the same but parrots can detect much finer differences in the qualities of colours. It has been known that the quality of the colour of a bird’s plumage is a reflection of the health and vitality of the bird. High quality plumage is therefore taken to indicate a more desirable mate with the prospect of healthier and sexier offspring.                                                 
  Light ist Life !
++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++

Fault bars, growth bars and pale bands

Fault bars, growth bars and pale bands in birds are often confused. But it is important to know about this phenomenon, because fault bars are an indication of the bird's health and also a sign of success by partner choice and breeding. Here is a description about the deciding differences between the terms... read more...>
++++++++++++++++++++++++++++++++++++

W. Hagelberg's zoologischer

Hand-Atlas” ...

... was published between 1879-1881. The second part (Part B) includes the part Aves (birds) is a collection of 285 rare bird illustrations ... read more...>

THE GLOSSY BLACK-COCKATOO 

Of the total of more than 10,000 species of birds, many species have to be lucky to spread on several continents. The most famous species is certainly the House Sparrow (Passer domesticus), whose numerous occurrence from Europe to Asia is known. Other species are only native or restricted to a certain country or local area. Reasons for this may be different, e.g. environment, food reserves, natural predators etc. This can make the survival for certain animal species (not only birds) very difficult and dangerous. A country for this especially fact is Australia. Numerous species in this country are endangered because of certain influences. read more ...>